Hard disk with improved corrosion protection and carbon layer manufacturing method of hard disk

摘要

The present invention relates to a hard disk and a method for producing a carbon layer of the hard disk with improved corrosion protection.;The method is a method for producing a carbon layer of a hard disk comprising an aluminum substrate, a nickel layer formed on the aluminum substrate, a magnetic layer formed on the nickel layer, a carbon layer formed on the magnetic layer, and a lubrication layer formed on the carbon layer. In the first step to the third step. The first step is to form a sputtered first carbon layer on the magnetic layer to enhance the density. The second step is to form a metal layer on the first carbon layer formed in the first step. The third step is a step of forming by sputtering a second carbon layer for reinforcing elasticity between the metal layer formed in the second step and the lubrication layer.;According to the present invention, by forming the carbon layer into three layers of the hydrogenated carbon layer, the chromium layer and the carbon nitride layer, chemical corrosion of the disk due to the combination of the water component and the magnetic layer can be prevented under high temperature and high humidity.